| APA | SDDU. (2012, February 15). In Acronym Geek. Retrieved 17:13, February 15, 2012, from http://www.acronymgeek.com/SDDU |
| MLA | "SDDU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SDDU>. |
| MHRA | 'SDDU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SDDU> [accessed 15 February 2012] |
| Chicago | "SDDU", http://www.acronymgeek.com/SDDU (accessed February 15, 2012). |
| CBE/CSE | SDDU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SDDU. |
| Bluebook | SDDU, http://www.acronymgeek.com/SDDU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDDU, http://www.acronymgeek.com/SDDU (optional description here) (as of Feb. 15, 2012, 17:13). |
| AMA | SDDU. Acronym Geek. February 15, 2012, 17:13. Available at: http://www.acronymgeek.com/SDDU. Accessed February 15, 2012, 17:13. |